TS525ODB / TS525ODW outdoor speakers have been designed and engineered with weather-resistant material so they can withstand just about anything that Mother Nature will throw at them. Scattered showers. Tropical depressions. Even Snow. Bring it on. The 5.25 inch 8 ohm rubber surround woofer with poly-mica cone and 1 inch dome tweeter are designed for the outdoor climate and great sound.